Arylsulfonylureas and arylsulfonylthioureas



United States Patent Oflice 3,475,450 Patented Oct. 28, 1969 3,475,450 ARYLSULFONYLUREAS AND ARYLSULFONYLTHIOUREAS Hans-Joachim Kabbe, Leverkusen, and Walter Puls, Wuppertal-Elberfeld, Germany, assignors to Farbenfabriken Bayer Akfiengesellschaft, Leverkusen, Germany, a corporation of Germany No Drawing. Filed Nov. 9, 1967, Ser. No. 681,923 Claims priority, application Germany, Nov. 16, 1966, F 50,688; Apr. 6, 1967, F 52,051 Int. Cl. C07d 27/74; A6lk 27/00 US. Cl. 260-326.1 10 Claims ABSTRACT OF THE DISCLOSURE Oral antidiabetic compounds are provided of the formula:

in which AA is OH or OH;

and B-B is EJH or CH: or CH; OH H:

X is oxygen or sulphur, and Y is hydrogen, methyl, acetyl, amino or halogen.

Two to 500 mg. and preferably about to 200 mg. of one of the foregoing compounds in a suitable carrier constitutes a daily dose for the treatment of diabetes.

It is known that certain arylsulphonylurea derivatives have a hypoglycemic, action. In particular, N-(4-methylbenzenesulphonyl) N butylurea (tolbutamide) has achieved great importance as a medicament on account of its hypoglycemic properties. Furthermore this com pound is well tolerated.

It has now been found that arylsulphonylureas and -thioureas of the formula:

in which AA is OH or CH;

CC CH2 and B-B is (RH or OH; or CH, CH CH:

X is oxygen or sulphur, and Y is hydrogen, methyl, acetytl, amino or halogen,

have a powerful hypoglycemic effect which is considerably greater than that of tolbutamide. The new compounds are therefore useful as medicaments to be administered orally for the treatment of diabetes. About 2 mg. to about 500 mg., preferably about 25 mg. to about 200 mg., per day is required per patient in a suitable carrier or vehicle. The new compounds have a very low toxicity which is above 1.5 g./kg. in the mouse.

These new aryl sulphonylurea derivatives are prepared by methods known per se either by reacting a tetracyclic amine of the formula:

with an arylsulphonylisocyanate or arylsulphoisothiocyanate of the formula:

in which A, B, X and Y have the meanings set forth above, or by reacting a tetracyclic amine of the formula:

with an arylsulphonylaminocarbonylor -thiocarbonyl compound of the formula:

in which X and Y have have the meanings set forth above and Z is a reactive radical capable of reacting with an amine of the formula:

formula in which Y has the meaning set forth above, either as such or in the form of an alkali metal salt, with a compound of the formula:

in which A, B and X have the meanings set forth above and Z' is halogen (preferably chlorine or bromine), an alkoxy group (preferably of 1 to 4 carbon atoms), an alkylmercapto group (preferably of l to 4 carbon atoms), or an amino or acylarnino group (preferably acetyl or benzoylamino), which amino or acylamino group may be substituted by one or two lower alkyl radicals (preferably of 1 to 4 carbon atoms). Compounds of this type which may be used are the corresponding carbamic acid chlorides, thiocarbamic acid chlorides, urethanes, thiocarbamic acid esters, dithiocarbamides, and ureas or thioureas which may be acylated.

Furthermore, the new arylsulphonylureas and -thioureas are also prepared by reacting an alkali metal salt of an N-bromo-sulphonamide of the formula:

wherein Y has the meaning set forth above and M is an alkali metal, with an N-formyl or N-thioformyl compound of the formula:

s I u ca 9-. B

in which A, B and Y have the meanings set forth above, or their S-alkylisothiourea derivatives, are converted into the corresponding urea derivatives of the formula:

i n-co-ua-so r in which A, B and Y have the meanings set forth above, by the action of heavy metal salts (see Hou'ben-Weyl, 4th edition, vol. 8, pages 162-163) or by oxidation. Arylsulphonylguanidines of the formula:

ll s-c-mi-so Y in which A, B and Y have the meanings set forth above are converted into the corresponding urea derivatives by hydrolysis.

The tetracyclic amines of the formula:

used as starting material, in which A-A has the meaning set forth above and BB is a CH group may, for example, be obtained as follows:

Cycloheptatriene is reacted with maleic acid anhydride in a manner known from the literature [K. Adler and G. Jacobs, Chem. Ber. 86, page 1528 (1953)] to form the tetracyclic anhydride of the formula:

on reduction.

When the C=C double bond in these compounds is hydrogenated, an end product of the formula:

is obtained.

Preparation of the tetracyclic amines of the formula:

used as starting materials, in which A-A stands for (IE or CH, CH H:

and BB stands for CH 01' OH;

OH B:

will now be explained with reference to the following example:

Cyelooctatetraene is reacted with maleic acid anhydride in known manner [W. 'Reppe and coworkers, Ann. 560, page 1 (1948)] to form the tetracyclic anhydride of the formula:

which reacts with ammonia to yield the imide of the formula:

On reduction of this compound, one solution obtains an amine of the formula:

The invention is further illustrated by the following non-limitative examples.

EXAMPLE 1 9.25 g. of 4,7-endocyclopropylene A hexahydroisoindole are stirred in 20 ml. of benzene, and 9.85 g. of P- tolylsulphoisocyanate in 20 ml. of benzene are added over a period of 6 minutes. The temperature is kept below 50 C. by cooling. After the reaction mixture has been left to stand for 20 hours at room temperature, the reaction product is extracted with sodium bicarbonate solution. Acetic acid is added to the organic phase which is then concentrated by evaporation. 13 g. (65%) of N- (tosylaminocarbonyl)-4,7-endocyclopropylene A hexahydroisoindole are obtained in the form of colorless crystals melting at 90 C.

When 1 mg./ kg. of this compound is administered to rats, the blood sugar level is reduced by 30 to 40% over 6 hours.

EXAMPLE 2 A solution of 6.4 g. of P-toluenesulphonyl isothiocyamate in 20 ml. of benzene is added dropwise over a period of 2 minutes to a solution of 4.8 g. of 4,7-endocyclopropylene-M-hexahydroisoindole in 20 ml. \of benzene. When this reaction mixture has been left to stand at room temperature for several days, 8.2 g. (73%) of N-(tosylaminothiocarbonyl) 4,7 endocyclopropylene A hexahydroisoindole of melting point 163 to 164 C. are obtained.

'When 310 mg./ kg. of this compound are administered to rats, the blood sugar level is lowered by 12 to 35% over several hours.

EXAMPLE 3 A solution of 3.7 g. of benzene sulphoiscyanate in m1. of benzene is added to a solution of 3.2 g. of 4,7-endocyclopropylene A hexahydroisoindole in 10 ml. of benzene, the temperature rising to 65 C. After 24 hours, the solution is shaken with ml. of dilute acetic acid, whereupon 3.8 g. (55%) of N-(phenylsulphonylaminocarbonyl) 4,7 endocyclopropylene A hexahydroisoindole precipitate. Melting point 178-l80 C.

When 2.5 mg./kg. of this compound are administered to rats, the blood sugar level is reduced by 20 to 30% over 6 hours.

6 EXAMPLE 4 A solution of 5.3 g. of 4,7-endocylopropylene octahydroisoindole in 20 ml. of benzene is stirred for 5 minutes with a solution of 6.4 g. of P-tosylisocyanate in- 20 m1. of benzene. After 24 hours, the clear solution is shaken with 100 ml. of 5% acetic acid, whereupon 10 g. (86%) of N-(tosylaminocarbonyl) 4,7 endocyclopropylene octahydroisoindole precipitate. Melting point 124-126 C.

When 2.5 mg./kg. of this compound are administered to rats, the blood sugar level is lowered by 20 to 30% over 6 hours.

EMMPLE 5 8.7 g. of 4.7-endocyclobutenylene A hexahydroisoindole were added to 100 ml. of benzene with stirring, and a solution of 9.8 g. of P-tosylisocyanate in 100 ml. of benzene was then stirred in, the temperature being kept below 50 C. After 4 hours, 15 g. (81%) of N- (tosylaminocarbonyl) 4,7 endocyclobutenylene A hexahydroisoindole were separated by suction filtration. Colorless crystals of melting point 147-148 C. were obtained.

When 0.25 to 0.5 mg./kg. of this compound are administered to rats, the blood sugar level is reduced by 10 to 20% over 6 hours.

EXAMPLE 6 ,A solution of 6.4 g. of 4,7-endocyclobutenylene A hexahydroisoindole in 30 m1. of benzene is added in the course of 3 minutes to a solution of 6.8 g. of phenylsulphoisocyanate in 30 ml. of benzene, the temperature being kept at 50 C. by cooling. When left to stand for 2 days at room temperature, 9.9 g. of N-(phenylsulphonylaminocarb'onyl) 4,7 endocyclobutenylene- M-hexahydroisoindole precipitate. Colorless crystals, melting at 171 to 174 C., are obtained.

When 0.5 mg./kg. of this compound are administered to rats, the blood sugar level is reduced by 10 to 20% over several hours.

EXAMPLE 7 EXAMPLE 8 10 g. (94%) of N-(p-fluorobenzenesulphonylaminocarbonyl)-4,7-endocyclobutylene-octahydroisoindole are obtained by reaction between 5.7 g. of p-fluorobenzenesulphoisocyanate and 4.9 g. of 4,7-endocyclobutylene-octahydroisoindole in 25 ml. of benzene over a period of 24 hours. Colorless crystals, melting at 84-87 C. are obtained.

When 10 mg./kg. of this compound are administered to rats, the blood sugar level is reduced by 10 to 30% over several hours.

EXAMPLE 9 34 g. (89%) of N-(p chlorobenzenesulphonylaminocarbonyl)-4,7 endocyclobutylene-octahydroisoindole are obtained by reaction between 21 g. of p-chlorobenzenesulphoisocyanate and 17 g. of 4,7-endocyclobutylene-octahydroisoindole in 60 ml. of benzene. Colorles crystals, melting at 83 to C. are obtained.

When 10 mg./kg. of this compound are administered to rats, the blood sugar level is reduced by 30% over several hours.

7 8 What is claimed is: 5. The compound of claim 1 which is N-(tosylamino- 1. A compound of the formula: carbonyl)-4,7-endocyclopropylene-octahydroisoindole.

6. The compound of claim 1 which is N-(tosylamino- X carbonyl)-4,7-endocyclobutenylene A hexahydroisoin- A B n m 5 dole.

| N C NH s ,Y 7. The compound of claim 1 which is N-(phenylsul- A B phonylaminocarbonyl) 4,7 endocyclobutenylene A hexahydroisoindole.

8. The compound of claim 1 which is N-(tosylaminoin which carbonyl)-4,7-endocyclobutylene-octahydroisoindole.

is 9. The compound of claim 1 which is N-(p-fiuorobenzene-sulphonylaminocarbonyl) 4,7 endocyclobutylenefi Or octahydroisoindole. CH CH: 10. The compound of claim 1 which is N-(p-chlorobenand is zene-sulphonylaminocarbonyl) 4,7 endocyclobutylene- CH or CH, or CH, octahydroisoindole. H OH References Cited Xis oxygen orsulphur, and UNITED STATES PATENTS Y is hydrogen, methyl, acetyl, amino or halogen.

2. The compound of claim 1 which is N-tosylamino- 3415842 12/1968 Mizzoni 260' 326'1 carbon 1 -4,7- endoc clo ro lene A hexah droisoindole. y p Py y ALEX MAZEL, Primary Examiner 3. The compound of claim 1 which is N-(tosylamino- J, A NARCA A E, Assistant E i thiocarbonyl)-4,7 endocyclopropylene-A -hexahydroisoindole- US. 01. X.R.

4. The compound of claim 1 which is N-(phenylsulphonylaminocarbonyl)-4,7 endocyclopropylene-A -hexa- 260-2395, 326, 346.3; 424-229, 274 hydroisoindole. 

